IndexError：字符串索引超出范围python问题

Question

I'm working on a game that called 'i will guess the name ur thinking of ' or 'guess my name'. The user will enter a letter and the program will try to guess what position of it by using a "for loop" in python:

list_of_names  = [ ]
userinput_letter = input('QUESTION : write a letter the name has: ')
new_list_of_names = [ ]
for names in list_of_names  :
  if userinput_letter in list_of_names  :
    new_list_of_names.append(names)
randomname = random.choice(new_list_of_names]
position_of_userletter = randomname.find(userinput_letter)
yn = input('QUESTION : does this letter "'+ userinput_letter +'" in the position "'+ str(position_of_userletter ) +'" (yes/no): ' )
if (yn == 'yes') :
    newlist_ofnames = [ ]
    for namesyes in new_list_of_names:
        if ( namesyes in userinput_letter [position_of_userletter] ) :
            newlist_ofnames.append(namesyes)
print(newlist_ofnames)

IndexError: string index out of range

Answer 1

As far as I understand userinput_letter is just one letter and you are trying to get some index in it. That's why you are getting error.

You should do smth like

if (len(namesyes) => position_of_userletter and namesyes[position_of_userletter] == userinput_letter):

Answer 2

First of all on line 5 you should have placed names instead of list_of_names.

Secondly you should place a loop that would re-run random choice if yn is equal to 'no'.

Then instead of this line:

    if ( namesyes in userinput_letter [position_of_userletter] ) :

place this line:

   if (namesyes[postition_of_userletter]== userinput_letter):

Hope it works :)